Colombian women Marta Garcia (R) and Maria Montoya, wife and mother of hostage Dayron Montoya, protest with a poster showing civilians kidnapped by the FARC guerrilla group in Medellin July 8, 2009. Colombia's President Alvaro Uribe on Wednesday agreed to rebel demands that a leftist senator mediate the release of hostages, but only if all 24 police and soldiers held by the guerrillas are freed at the same time. REUTERS/Fredy Amariles (COLOMBIA CONFLICT)